Diethyl sulfide stabilization of platinum-complex catalysts for hydrosilylation of olefins
Addition of excess diethylsulfide to the Karstedt catalyst prevents agglomeration of Pt and results in higher reaction rates for hydrosilylation of olefins. The beneficial effects were very pronounced in the hydrosilylation of trimethylsilyl-4-pentenoate with tetrakis(dimethylsilylethyl)silane, where 57% yield was obtained compared with 10% without diethylsulfide. Enhanced activity was also observed in the hydrosilylation of tetravinylsilane, vinyltrimethylsilane, and 1-hexene with chlorodimethylsilane.
Graphical abstractPresence of diethylsulfide facilitates Pt-catalyzed hydrosilylation significantly.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Diethyl sulfide stabilizes hydrosilylation catalysts against metal agglomeration. ► Et2S enhances hydrosilylation rate with common olefins. ► Beneficial effects of Et2S were observed with both Karstedt and Speier's catalyst.
Journal: Catalysis Communications - Volume 12, Issue 12, 1 July 2011, Pages 1166–1169